William Monroe wrote: > Hi List, > > Anyone know of anything chronic in Boston Grands (GP178) that has the > hammer double striking on a quick/firm staccato blow? I've got one > that does. Anyone have any ideas/solutions? The piano is finely > regulated otherwise (just today, in fact). 1 3/4" blow, about .400" > Key Travel, Checking about 1/2", Rep springs are definitely NOT > jumpy. In all other ways, the action plays nicely, controllably. And > that is no mean feat. I took some DW/UW measures today out of > curiousity, and they were haywire. DW range from 62g - 46g, UW from > 18g to 35g or so. > > My thoughts are turning to action pinning (haven't checked yet). Key > Bushings and pins are clean and lubed (teflon), but that's as far as > we got. Wondering if tight pinning (of any parts) might contribute to > this rebounding back into the strings - and it is a full rebound. You > can watch the hammer appear to bounce off the rest rail, though I'm > not convinced that is exactly what is happening. Kind of musing aloud > here.............. > William R. Monroe Take it off the - springs O:-) -- Duaine Hechler Piano, Player Piano, Pump Organ Tuning, Servicing & Rebuilding Reed Organ Society Member Florissant, MO 63034 (314) 838-5587 dahechler at att.net www.hechlerpianoandorgan.com -- Home & Business user of Linux - 10 years
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